Chain-grate stoker.



J. H. ROsBNTH'AL & c. s. DAVY.

0mm GRATE STOKER.

APPLICATION FILED JUNE 24, I912- 1,()91,1 66, I Patented Man-24, 1914;

2 SHEETS-SHEET 1.

. INVENTORJ'.

t s I ir "7 WITNESSES:

94-41 ATTORNEW.

J. 'H. EOSENTHAL & c. s. DAVY.

CHAIN GRATE STOKER APPLIOATION FILED JUNE 24, 1912.

1,091,166. Patented Mar. 24, 19m

7 v 2 sums-sum 2.

WITNESSES: INVENTORS ATTORNEYJ' in that weJnrnsll. ROSES'LIIAL Ami-nan3..D.\vy, subjects of the King ofwGrreat- Britain, residing,respective'l-wyat LondonixEnf-gland, and at Dulwich,

' London, England, have invented certain new and useful improvements inChain-Grate stokersy-ofwhicli the following is a specification. I

This invention relates to chain grate stokers adapted to be fitted tothe furnaces of steam generators and'the like, and has for its object toprovide an improved construc tion of grate in which any individual bar,or set ofbars, which may break or burn out, can be replaced with aminimum loss of time and labor and without the necessity for displacingany essential portion of the mechanism.

The invention will be understood by reference to the accompanyingdrawings in which Figure l is a part elevation, part longitudinalvertical section; Fig. 2, a top view, part being in section, of two ofthe transverse bars on which the grate bars are suspended; and Fig. 3, atransverse section on the plane of the line 3-3 of Fig, 1.

Similar reference numerals indicate'similar parts in the several views.

Referring to the drawings, the numeral 1 designates transverse barsadapted to receive and support' the grate bars 2. The transverse barsare formed with a head 3 open at the sides, and the grate bars areformed with a recess 4 open at the sides. the

wall of which recess corresponds to the head on the supportingtransverse bar. The width of the opening 5, between the jaws 6 and 7 ofthe grate bars, leading into'said recess is less than the diameter ofthe head, so that the-grate bars may be assembled by sliding themendw-ise onto the parallel transverse bars. The grate bars are ofcomparatively short length and are placed, on a given bar, side by side,the heads serving as pivots for the grate bars so that the latt'er mayswing freely, one row resting upon" the next adjacent row on the. upperrun. On the lower or return run thegrate bars are permitted to swingdm-vnwardlv without danger of disengagement from the transverse bars,the web acting as a stop for the swinging grate bars, as shown in Fig.1, thereby providing for access of airt-o the i Specification of LettersPatent.

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CHAIN-GRATE s'roKER-jq Y upper surface'of the grate. and at the same nrnannnnon-nlsrornnn s. DAVY, or Lonno1\T .-E1veLANn, assreivdnsCOCKISZWVILCOX CQMPANY, or; BAYONNE, NEW'JERSEYjA ooRPoRA- Patented Mar;251934. 1 p Application filed June 24,1912, Seria1 Nb.70 5,424.

time permitting ash to be discharged frrelv into the ash pi Although wehave shown a bulbous head on the transverse bars. we do not desire to,

be limited to that exact form. as the invention contemplates a'transverse .bar ha \fiufl' a head adapted to receive the grate harstanilgrate bars having a recess. the wall of which corresponds to said head,with an ,opcuing between the jaws leading .into the recess which willpermit assembling the grate bars in the manner above stated, and willpermit their free movement on such pivotal :svp port. 1

The transverse bars 1 are conncctml at their ends to endless chains 8adapted to he driven by sprocket wheels or drums 9,f,dis-' posed at ornear the front and rear eudsof the movable stoker frame. Rollers 10 arefitted-at the ends of the transverse bars 1. which rollers are adaptedto run on rails or guides 11 secured to the sides of the stoke:- frameso as to support the upper transverse bars and grate bars. The saidrollers 10 also serve to support the transverse bars 1 on the return, orunderside of the chain forming the grate, by engagingwith rails orguides 12 disposed beneaththe rails or guides ,11 and secured to thesides of the stoker frame.

From the foregoing description it will be seen that we provide aneflicient grate made up of independent sections applied on supportingbars, and wherein any of the sections, or any of the bars of a singlesection. may be easily removed from the supporting bar withoutdisturbing the other sections. Also that no means of attachment of thegrate'bars to the supporting bars. other than the open-sided recessinelosed between the jaws (Sand 7 is necessary.

What we claim and desire to secure bv Letters Patent of the UnitedStates is t 1. A chain grate stoker comprising a plurality of transversesupporting bars having" 2. A chain grate stoker comprising a plu raiityof transverse supporting bars having heads torecelve and to prevent thegrate bars belng d sengaged, and grate bars each having open ]aWs.and arecess between said ,on said heads as apivot,

chain grate stoker comprising a phirality of,transver,se supporting barseach having alwebiand aiheadeand grate bars adapted to f be assembled 4on the heads of a; said transverse bars and to swing thereon,

the websfactingias stops for the swinging grate bars onther eturn run ofthe grate.

5. A chain grate stoker comprising a pinrality .of transverse supportingbars; each hav ahe d nd as e a grate bars each having; open jaws ,andanopen sided recess between the jaws'corresponding to said head, theopening into the jaws being of less width than the diameter of the head,whereby the grate bars niav beslid endwise over a transverse bar an mayswing on said head, the web acting as a stop for the swinging grate barson the return run of the grate.

6. A chain grate stoker comprising a pinrality of transverse supportingbars each having a web and a bulbous head, and grate bars each havingopen jaws, anda recess between said jaws open at the sides andcorresponding to said head, the opening of the jaws being of less widththan the' diameter of the head, whereby. tiiefgrate bars may he 1 slidendwise over a transverse bar and may swing on said head, the web actingasa stop for the swinging grate bars on thelreturn run of the grate, e

In testimony whereof we haveh'ercunto signdonr names in the presenceof'two any scribing witnesses. V

- JAMES H, .nosnnrimsn CHRISTOPHER S.v DAVY v 1 I Witnesses: i H N YPELHAM SMITH, JERE Y ELLIS OBlnnx.

